JP2010254633A - Two-component type oxidative hair dye and first component for bleach - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two-component type oxidative hair dye and the first component for a bleach which have reduced irritating odor, promote the effective component to efficiently penetrate into the inside of the hair, has an excellent long term storage stability at high temperatures, and gives a feel free of stickiness upon rinsing. <P>SOLUTION: The two-component type oxidative hair dye and the first component for a bleach are used for oxidation-dyeing or bleaching the hair, and each includes at least an alkali agent, (A) a polyoxyethylene alkyl ether having ≥16C alkyl, (B) a straight chain saturated higher alcohol having ≥16 carbons, (C) glyceryl stearate, and (D) an anionic surfactant having a straight chain alkyl having ≥16 carbons. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a first agent for two-component oxidative hair dyes and depigmenting agents used for oxidative hair coloring and decolorization of hair, and in particular, can reduce the irritating odor and efficiently penetrate active ingredients into the hair. The present invention relates to a first agent for two-component oxidative hair dye / bleaching agent that can be made to be excellent in long-term storage stability at high temperatures and can give a squeak-free feel during rinsing.

  The purpose of using hair dyes is “white hair dyeing” to make white hair inconspicuous by dyeing white hair black or brown, and “fashion dyeing” to give black hair a bright color and change its appearance to add fashion. Alternatively, there is “fashionable hair dyeing” or the like that combines both functions.

  As such a hair dye, an oxidative hair dye is conventionally known. However, the oxidative hair dye includes a first agent containing an oxidative dye or an alkaline agent as a main component and a second agent containing an oxidizer as a main component. A two-component oxidative hair dye composed of an agent is widely used. Such two-component oxidative hair dye is used by mixing the first agent and the second agent at the time of use.

  The above-mentioned two-component oxidative hair dye decomposes the melanin pigment in hair by reacting the alkaline agent contained in the first agent and the oxidizing agent (mainly hydrogen peroxide) contained in the second agent (decolorization). ) And the dye is colored to make the hair brighter.

  In recent years, there has been a strong demand for dyeing hair in a bright shade no matter what purpose it is used. In order to dye hair in a light shade, it is necessary to decompose the melanin pigment in the hair. There is a tendency to increase the blending amount of the alkaline agent in the first agent.

  By the way, as the alkaline agent contained in the first agent, ammonium salts such as ammonia water and ammonium hydrogen carbonate are generally used. However, the generation of ammonia-stimulating odor with the increase in the amount of such alkaline agent used. In addition, the stability of the base is lowered, the hair is greatly damaged and the hair is crumpled, and squeaking occurs during rinsing. In addition, there is a problem of skin irritation due to an increase in the amount of alkaline agent used. In order to solve such problems, various techniques have been proposed so far.

  For example, Patent Document 1 proposes a method of using alkanolamine or inorganic alkali with a little irritating odor instead of ammonia. Moreover, in patent document 2, the irritating odor is reduced by mix | blending isoparaffin, a nonionic surfactant, and a high molecular compound. In patent document 3, the irritating odor is reduced by mix | blending the oil agent which uses triglyceride as a structural component, a higher alcohol, and ester type nonionic surfactant. In Patent Document 4, the irritating odor is reduced by blending a higher alcohol having 20 to 25 carbon atoms, a higher alcohol having 10 to 19 carbon atoms and a surfactant. In Patent Document 5, an irritating odor is reduced by blending a quaternary ammonium salt having a total carbon number of 25 or more, a higher alcohol, and a nonionic surfactant.

  However, with these technologies, it is difficult to efficiently penetrate alkaline agents and dyes into the hair, and the first agent such as decolorization and dyeing cannot fully exert the intended effect, and the hair is also damaged significantly. Has the disadvantage of giving. Further, in the techniques proposed so far, there is a problem that “squeaking” occurs in the hair during rinsing. Such a situation is the same in a two-component bleaching agent composition that is configured without containing an oxidation dye in the first agent in the two-component oxidation hair dye. In the following, the two-component oxidative hair dye and the first agent used in the oxidative decoloring agent are combined to be referred to as “first oxidative hair dye / decoloring agent first agent” (hereinafter simply referred to as “first agent”). There are things).

  In addition, as described above, ammonium salts such as ammonia and ammonium hydrogen carbonate, which are alkali agents generally contained in the first agent, have problems of scalp irritation and hair damage caused by these alkali agents. . For example, Patent Document 6 proposes a technique for alleviating scalp irritation by blending phytic acid or a salt thereof. In this technology, the effect of alleviating scalp irritation is effectively exhibited by adding phytic acid or its salt to the first agent for two-component oxidative hair dye / bleaching agent. And the penetration of active ingredients is still insufficient.

  In recent years, high-concentration alkaline agents and dyes are often blended for the purpose of “fashionable hair dyeing”, and the stability of the first agent is lowered, and it tends to be difficult to ensure sufficient high-temperature stability in particular. . In addition, when stored in a warehouse for a long period of time, it is necessary to ensure stability at high temperatures due to temperature rise in summer. For these reasons, the first agent for two-component oxidative hair dye / bleaching agent is stable over a long period even when stored at a relatively high temperature (this is referred to as “long-term storage stability”). It is also necessary to be superior.

JP, 2004-189717, A Claims etc. JP, 2003-221319, A Claims etc. JP, 2003-073243, A Claims etc. JP, 2004-189638, A Claims etc. JP, 2008-184447, A Claims etc. JP, 2007-039351, A Claims etc.

  The present invention has been made under such circumstances, and its purpose is to reduce the irritating odor and to allow the active ingredient to efficiently penetrate into the hair, and to have excellent long-term storage stability at high temperatures, An object of the present invention is to provide a first agent for a two-component oxidative hair dye / bleaching agent that can give a squeak-free feel during rinsing.

  The first agent for two-component oxidative hair dye / bleaching agent of the present invention that has achieved the above-mentioned object is a two-component oxidative dye used at the time of oxidative hair dyeing or decoloring at least an alkali agent. In the first agent for hair and depigmenting agent, (A) a polyoxyethylene alkyl ether having an alkyl group having 16 or more carbon atoms, (B) a linear saturated higher alcohol having 16 or more carbon atoms, (C) glyceryl stearate, and (D) It has a gist in that it contains an anionic surfactant having a linear alkyl group having 16 or more carbon atoms.

  In the first agent for two-component oxidative hair dye / bleaching agent of the present invention, the component (A) contains ethylene oxide having a mol number of 30 to 40 mol and 100 to 200 mol, respectively. The blending ratio is preferably 1: 1 to 20: 1 (mass ratio).

  As the alkaline agent contained in the first agent for two-component oxidative hair dye / bleaching agent of the present invention, the effect can be effectively exhibited when either ammonia or ammonium hydrogen carbonate is used.

  The first agent for two-component oxidative hair dye / bleaching agent of the present invention preferably further contains (E) lanolin and (F) cholesterol derivative, (G) phytic acid or a salt thereof, and the like. The effect according to the contained component is exhibited.

  According to the present invention, in the first agent for two-component oxidative hair coloring / decoloring agent, which contains at least an alkaline agent and is used for oxidative hair coloring or decoloring hair, (A) the alkyl group has 16 or more carbon atoms Polyoxyethylene alkyl ether, (B) a linear saturated higher alcohol having 16 or more carbon atoms, (C) glyceryl stearate, and (D) an anionic surfactant having a linear alkyl group having 16 or more carbon atoms. The two-part formulation that can reduce the irritating odor and can efficiently penetrate the active ingredient into the hair, has excellent long-term storage stability at high temperatures, and can impart a squeak-free feel when rinsed. It becomes the first agent for oxidative hair dyes and depigmenting agents.

  The present inventors have studied from various angles in order to realize a first agent for two-component oxidative hair dye / bleaching agent that meets the above-mentioned purpose. As a result, (A) polyoxyethylene alkyl ether having 16 or more carbon atoms in the alkyl group, (B) linear saturated higher alcohol having 16 or more carbon atoms, (C) monoglyceryl stearate, and (D) 16 carbon atoms. The present invention has been completed by finding that the above objects can be achieved with the above-mentioned anionic surfactant having a linear alkyl group.

  The first agent for two-component oxidative hair dye / bleaching agent of the present invention contains the above components (A) to (D). These components have been conventionally used in cosmetics, and the action of each component will be described.

  The polyoxyethylene alkyl ether having 16 or more carbon atoms [the above component (A)] is a component necessary for suppressing an irritating odor caused by an alkaline agent and efficiently penetrating the inside of the hair with an alkaline agent or a dye. In order to exert such an effect, it is preferable to contain 0.1% by mass or more (a ratio of the two-part oxidative hair dye / bleaching agent first agent), but 10% by mass (two-part oxidative hair dye)・ If the ratio exceeds the ratio of the first bleaching agent, the irritating odor cannot be suppressed, and the mixing property with the second agent and the applicability to the hair become worse.

  Specific examples of the polyoxyethylene alkyl ether having 16 or more carbon atoms include polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octyldodecyl ether, and the like.

  The polyoxyethylene alkyl ether having 16 or more carbon atoms contains ethylene oxide having a mol number of 30 to 40 mol and 100 to 200 mol, respectively, and their blending ratio [mole number of ethylene oxide is 30 to 40 mol. Those having a mol number of ethylene oxide of 100 to 200 mol] are preferably 1: 1 to 20: 1 (mass ratio). Thereby, the effect by containing polyoxyethylene alkyl ether is most effectively exhibited.

  The linear saturated higher alcohol having 16 or more carbon atoms [the component (B)] suppresses the irritating odor caused by the alkaline agent and efficiently penetrates the inside of the hair with the alkaline agent and the dye as in the case of the component (A). It is a necessary ingredient above. In order to exert such an effect, it is preferable to contain 1% by mass or more (ratio of the two-component oxidative hair dye / bleaching agent first agent), but 20% by mass (two-component oxidative hair dye / decolorized). If the ratio exceeds the ratio of the total amount of the first agent, the mixing property with the second agent becomes worse.

  Specific examples of the straight chain saturated higher alcohol having 16 or more carbon atoms include cetyl alcohol, stearyl alcohol, and behenyl alcohol.

  Monoglyceryl stearate [the above component (C)], like the above components (A) and (B), suppresses the irritating odor caused by the alkaline agent and allows the alkaline agent, dye, etc. to penetrate efficiently into the hair. It is a necessary ingredient. In order to exert such an effect, it is preferable to contain 0.1% by mass or more (a ratio of the two-part oxidative hair dye / bleaching agent first agent), but 10% by mass (two-part oxidative hair dye) -If it exceeds the ratio of the total amount of the depigmenting agent, the miscibility with the second agent will deteriorate.

  The anionic surfactant having the straight chain alkyl group having 16 or more carbon atoms [the component (D)] suppresses the irritating odor caused by the alkaline agent as in the components (A), (B), and (C). At the same time, it is a necessary component for efficiently penetrating the inside of the hair with an alkali agent, a dye or the like. In order to exert such an effect, it is preferably contained in an amount of 0.1% by mass or more (ratio of the two-component oxidative hair dye / bleaching agent first agent), but 10% by mass (two agents) If the ratio exceeds the ratio of the formula oxidative hair dye / bleaching agent to the entire first agent, it is mixed with the second agent, applied to the hair, and then squeezed upon rinsing after the hair coloring treatment.

  Specific examples of the anionic surfactant having a linear alkyl group having 16 or more carbon atoms include sodium cetyl sulfate, sodium cetostearyl sulfate, sodium stearyl sulfate, and sodium behenyl sulfate. Palmitic acid, stearic acid, behenic acid, etc. suitable alkali agents (sodium hydroxide, potassium hydroxide, ammonia, ammonium hydrogen carbonate, monoethanolamine, triethanolamine, 2-amino-2-methyl-1-propanol, etc. ) Can be used after neutralization.

  Typical examples of the alkaline agent to be contained in the first agent for two-component oxidative hair dye / bleaching agent of the present invention include ammonia and ammonium hydrogen carbonate. Combined use of alkanolamines such as ethanolamine and 2-amino-2-methyl-1-propanol, inorganic alkalis such as sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate, and basic amino acids such as arginine and lysine or salts thereof it can.

  By blending the components (A) to (D) as described above, the irritating odor caused by the alkaline agent (especially ammonia or ammonium hydrogen carbonate) can be reduced, and the alkaline agent or dye can be efficiently penetrated into the hair. Will be able to. The reason why such an effect is exerted is not fully clarified, but could probably be considered as follows. That is, a composition composed of a substance containing an alkyl group having 16 or more carbon atoms as in the present invention has a layered structure and can hold an alkali agent, a dye, or the like in the composition. Therefore, it is considered that a dye or the like can efficiently penetrate into the hair when applied to the hair without releasing an irritating odor into the air. In particular, among the polyoxyethylene alkyl ethers having 16 or more carbon atoms of the component (A), those having a combined ethylene oxide (a) having 30 to 40 mol of ethylene oxide and (b) having 100 to 200 mol are as follows: The irritating odor can be further reduced.

  Moreover, the 1st agent which consists of the above components (A)-(D) becomes the thing excellent also in the long-term storage stability at high temperature, without isolate | separating at an early stage.

  The first agent for the two-component oxidative hair dye / bleaching agent of the present invention basically contains the above components (A) to (D), but if necessary, (E) lanolin and (F) cholesterol derivatives, (G) It is also preferable to contain phytic acid or a salt thereof, and the effect according to the contained component is exhibited. The effects of containing these components are as follows.

  Hair subjected to hair color treatment using the first agent blended with lanolin [the above component (E)] has better fingering of the hair. In order to exhibit such an effect, it is preferable to contain lanolin so that it may become 0.01 mass% or more (ratio to the 2nd agent type oxidative hair dye / bleaching agent 1st agent whole). However, if the amount is excessive, lanolin will be excessively deposited on the hair and the finger will pass and deteriorate, so the content should be 10% by mass or less (percentage of the two-part oxidative hair dye / bleaching agent first agent). Is preferred.

  Specific examples of lanolin include liquid lanolin, reduced lanolin, and adsorbed purified lanolin.

  Hair that has been hair-colored using the first agent containing the cholesterol derivative [component (F)] gives a moist feel to the hair and improves the condition of the hair, compared to hair that does not contain the cholesterol derivative. . In order to exert such an effect, the cholesterol derivative is preferably contained so as to be 0.05% by mass or more (ratio to the entire two-agent oxidative hair dye / bleaching agent first agent). However, if the cholesterol derivative content is excessive, the cholesterol derivative will be excessively deposited on the hair and the finish will become too heavy. (Occupying ratio) is preferably included.

  Specific examples of cholesterol derivatives include soft lanolin fatty acid cholesteryl, cholesteryl isostearate, cholesteryl oleate, and cholesteryl hydroxystearate.

  Phytic acid or a salt thereof [the above component (G)] is an effective component for alleviating skin irritation when a hair color treatment is performed using the first agent containing the phytic acid. Even if phytic acid is contained in the form of a salt, its effect is exhibited, but in order to exert its effect, 0.1% by mass or more in terms of phytic acid (two-component oxidative hair dye / bleaching agent No. 2) It is preferable to make it contain so that it may become the ratio to the whole 1 agent). However, even if the amount of phytic acid (or its salt) becomes too large, the effect is saturated. preferable.

  The reason why the effect of alleviating skin irritation can be obtained by including phytic acid or a salt thereof is not clarified, but could probably be considered as follows. That is, phytic acid is a substance having a large molecular weight of 660.1, and phytic acid forms a salt with an alkaline agent that causes irritation. It is done.

  The first agent for two-component oxidative hair dye / bleaching agent of the present invention includes both an oxidative hair dye and a decoloring agent. As an oxidative dye to be blended when used as an oxidative hair dye, for example, Examples include p-phenylenediamine, toluene-2,5-diamine, p-aminophenol, and the like.

  When used as an oxidative hair dye, a coupler can be blended if necessary. Examples of such couplers include α-naphthol, resorcin, m-aminophenol, 2,4-diaminophenoxyethanol, p-amino-o-cresol, 5- (2-hydroxyethylamino) -2-methylphenol, and the like. Can be mentioned.

  In addition to the above substances, those described in "Quasi-drug raw material standard 2006" (Pharmaceutical Daily) can be used as appropriate. Furthermore, acidic dyes, basic dyes, HC dyes, and the like can be blended.

  The first agent for two-component oxidative hair coloring / decoloring agent of the present invention is the first component for oxidative hair coloring / decoloring containing at least an alkaline agent (or an oxidative dye in the case of a hair dying agent). (A) to (D) are basically included, and if necessary, (E) lanolin and (F) cholesterol derivatives, (G) phytic acid or a salt thereof, and the like. The additive normally contained in the 1st agent for decoloring may be included. Examples of such additives include humectants, fats and oils, silicones, cationized polymers, thickening / gelling agents, chelating agents, antioxidants, pH adjusters, solvents, anti-inflammatory agents, fragrances, pigments, etc. Can be blended.

  Examples of these additives include, as moisturizers, polyhydric alcohols such as 1,3-butylene glycol, propylene glycol, dipropylene glycol, glycerin, 3-methyl-1,3-butanediol, and hyaluronic acid. Sodium, citrate, chondroitin sulfate, sodium lactate, sodium 2-pyrrolidone-5-carboxylate, trimethylglycine, collagen, gelatin, elastin, collagen degrading peptide, elastin degrading peptide, hydrolyzed keratin solution and silylated product (N- [ 2-hydroxy-3- [3- (dihydroxymethylsilyl) propoxy] propyl] hydrolyzed keratin), soybean protein hydrolyzate and silylated product (N- [2-hydroxy-3- [3- (dihydroxymethylsilyl) Propoxy] propyl] hydrate Soy protein), hydrolyzed silk and silylated products (N- [2-hydroxy-3- [3- (dihydroxymethylsilyl) propoxy] propyl] hydrolyzed silk), wheat proteolytic peptides, casein degrading peptides, etc. Peptides and derivatives thereof, amino acids such as arginine, serine, glycine and glutamic acid, aloe extract, hammamel water, loofah water, chamomile extract, animal and plant extract components such as licorice extract, and the like.

  Fats and oils include paraffin, liquid paraffin, petroleum jelly, candelilla wax, carnauba wax, rice wax, wax, beeswax, paraffin wax, microcrystalline wax, petrolatum, etc., hydrocarbons such as squalane, hydrogenated polyisobutene, Palm oil, palm oil, palm kernel oil, sunflower oil, olive oil, avocado oil, sesame oil, evening primrose oil, wheat germ oil, macadamia nut oil, hazelnut oil, rosehip oil, meadow foam oil, tea tree oil, peppermint oil, corn Oil, rapeseed oil, sunflower oil, mountain tea flower oil, camellia oil, camellia seed oil, wheat germ oil, cottonseed oil, soybean oil, peanut oil, vegetable oils such as rice bran oil, shea fat, jojoba oil, cetyl 2-ethylhexanoate, Isopropyl palmitate, isopropyl myristate Le, isopropyl stearate, isopropyl isostearate, fatty acid esters such as isocetyl stearate, and the like.

  Silicones include low-viscosity dimethylpolysiloxane, high-viscosity dimethylpolysiloxane, cyclic dimethylsiloxane (decamethylcyclopentasiloxane), methylphenylpolysiloxane, diphenylpolysiloxane, silicone resin, silicone rubber, amino-modified polysiloxane, and cation-modified. Examples include polysiloxane, polyether-modified polysiloxane, and fluorine-modified polysiloxane.

  Examples of the cationized polymers include dimethyldiallylammonium chloride / acrylamide copolymer, cationized cellulose derivative, cationized starch, cationized guar gum, and quaternized polyvinylpyrrolidone derivative.

  Thickening and gelling agents include guar gum, xanthan gum, carrageenan, alginic acid, tragacanth gum, starch derivatives, sodium carboxymethyl cellulose, carboxyvinyl polymer, acrylic acid / methacrylic acid ester copolymer, acrylic acid / alkyl methacrylate acrylic copolymer Examples include coalesced polymer, polyvinyl alcohol, and highly polymerized polyethylene glycol.

  Examples of chelating agents include edetate (tetrasodium edetate), phosphonic acids, and polyamino acids.

  Antioxidants include ascorbic acid and its salts (sodium ascorbate), or ascorbic acid derivatives, sodium sulfite, thioglycolic acid and its salts, cysteine, tocopherol and its derivatives, butylhydroxytoluene, butylhydroxyanisole, etc. .

  Examples of pH adjusters include phosphoric acid, malic acid, tartaric acid, carbonic acid, fumaric acid, citric acid, lactic acid, glycolic acid, succinic acid, hydrochloric acid, sulfuric acid, nitric acid or salts thereof, ammonia, monoethanolamine, sodium hydroxide, Examples thereof include potassium hydroxide, disodium hydrogen phosphate, and salts thereof.

  Examples of the solvents include lower alcohols such as ethanol, 2-propanol and polyethylene glycol.

  Examples of the anti-inflammatory agent include glycyrrhizic acid and its derivatives (dipotassium glycyrrhizinate), guaiazulene and the like.

  As the dosage form of the first agent for the two-component oxidative hair dye / bleaching agent of the present invention, a cream type or a gel type is useful, but a liquid type can also be used.

  Next, the present invention will be described more specifically by way of examples. However, the following examples are not intended to limit the present invention, and all modifications can be made without departing from the spirit of the above and following descriptions. To be included in the scope.

  Various raw materials were blended at various blending ratios shown in Table 1 below to prepare a second agent for two-component oxidative hair dye (hereinafter simply referred to as “second agent”). In the following examples, the second agent shown in Table 1 was used.

Example 1
Various raw materials were blended at various blending ratios shown in Tables 2 to 5 below to prepare first agents for oxidative hair dyeing. In the following Tables 2 to 5, the polyoxyethylene cetyl ether means “POE cetyl ether” means polyoxyethylene cetyl ether. The number in parentheses after POE cetyl ether represents the number of moles of ethylene oxide (the same applies to Tables 6 and 7 below). Using these first agent and second agent, each item was evaluated by the following method. The results are also shown in Tables 2 to 5 below.

(Evaluation method of irritating odor)
About the odor of the mixture after mixing the 1st agent which showed the component composition in the following Tables 2-5, and the 2nd agent shown in Table 1 so that it may become 1: 1 (mass ratio), a specialized panelist ( Ten persons) conducted a sensory test, and the total value was obtained and evaluated according to the following criteria.

(Evaluation criteria for irritating odors)
3 points: A slight irritating odor was felt 2 points: An irritating odor was felt 1 point: An irritating odor was felt strongly (standard of total value)
◎: 26-30 points ○: 21-25 points △: 16-20 points ×: 10-15 points

(Dyeing Evaluation Method I)
The chemicals obtained by mixing the first agent (formulation examples 1 to 25) whose component compositions are shown in Tables 2 to 5 below and the second agent shown in Table 1 so as to be 1: 1 (mass ratio) The hair was applied to a hair bundle (10 cm, 1.0 g, 100% gray hair) derived from a person who had not received the target treatment (oxidative dyeing, decolorization treatment, etc.) and left at 35 ° C. for 30 minutes. Subsequently, it was washed with water, washed with a 10% aqueous solution of triethanolamine lauryl sulfate, and then air-dried. At this stage, the degree of dyeing of the hair bundle was visually observed by a professional panelist (10 persons), and the total value was obtained and evaluated according to the following criteria. It changes from light brown to dark brown depending on the degree to which the hair bundle is dyed.

(Evaluation criteria I for staining)
3 points: deeply dyed 2 points: slightly dyed slightly 1 point: slightly dyed (based on total value)
◎: 26-30 points ○: 21-25 points △: 16-20 points ×: 10-15 points

(Dyeing evaluation method II)
The first agent whose component composition is shown in the following Tables 2 to 5 and the second agent shown in Table 1 are mixed so as to be 1: 1 (mass ratio). It was applied to a hair bundle (10 cm, 1.0 g, 100% gray hair) derived from a person who had not undergone decoloring treatment, and allowed to stand at 35 ° C. for 30 minutes. Subsequently, it was washed with water, washed with a 10% aqueous solution of triethanolamine lauryl sulfate, and then air-dried.

  L *, a *, and b * of the hair bundle subjected to the above treatment are measured with a color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., “Spectro color Meter SE2000”), and the L * value is compared to oxidative dyeing. The degree of dyeing of the hair agent (brown) was evaluated according to the following criteria. The smaller the L * value, the higher the dyeability and the darker the color.

◎: L * less than 24.00 ○: L * 24.00 or more, less than 24.50 Δ: L * 24.50 or more, less than 25.00 ×: L * 25.00 or more

(Evaluation method criteria for long-term storage stability)
Each sample of the 1st agent which showed the component composition to the following Tables 2-5 was preserve | saved for one month in a 50 degreeC thermostat, the presence or absence of isolation | separation was confirmed visually, and the following reference | standard evaluated.
(Evaluation criteria for long-term storage stability)
○: No separation was observed ×: Separation was observed

  As apparent from the results of Table 2 above, by using a POE cetyl ether having a mole number of 30 to 40 mol and that having a mole number of 100 to 200 mol (prescription examples 4 to 8), the irritating odor can be suppressed, It can be seen that good dyeability can be obtained.

  Further, as apparent from the results in Table 3, by blending POE cetyl ether having a mole number of 30 to 40 mol and 100 to 200 mol in a ratio of 1: 1 to 20: 1 (mass ratio) (prescription Examples 11-14) It can be seen that the irritating odor can be suppressed and good dyeability can be obtained.

  As is clear from the results in Table 4, by adding a linear saturated higher alcohol having 16 or more carbon atoms (Formulation Examples 6, 17, and 18), the irritating odor can be suppressed and good dyeability is obtained. You can see that

  As is apparent from the results in Table 5, by adding an anionic surfactant having a linear alkyl group having 16 or more carbon atoms (Formulation Examples 6, 21 to 23), the irritating odor can be suppressed, It can be seen that good dyeability can be obtained.

(Example 2)
(Assessment method of moist feeling according to the finger)
The first agent (prescription examples 26 to 31: prescription examples 30 and 31 are depigmenting agents) whose component compositions are shown in Table 6 below and the second agent shown in Table 1 are 1: 1 (mass ratio). Is applied to a hair bundle (10 cm, 1.0 g, 100% gray hair) derived from a person who has not been subjected to chemical treatment (oxidative dyeing, decoloration treatment, etc.), and 35 ° C. for 30 minutes. I left it alone. Subsequently, it washed with water and 10% aqueous solution of triethanolamine lauryl sulfate. The fingering of the hair at that time was evaluated by specialized panelists (10 persons). Moreover, about the moist feeling after drying, the total value was calculated | required by the expert panelist (10 persons), and it judged by the following evaluation criteria. The results are also shown in Table 6 below.

(As per finger evaluation criteria)
3 points: Obviously good fingering 2 points: Somewhat good fingering 1 point: Bad fingering
(Evaluation criteria for total value)
◎: 26-30 points ○: 21-25 points △: 16-20 points ×: 10-15 points

(Evaluation criteria for moist feeling)
3 points: very moist 2 points: moist 1 point: puffy (evaluation standard for total value)
◎: 26-30 points ○: 21-25 points △: 16-20 points ×: 10-15 points

  As is apparent from the results in Table 6 above, finger lantern results are particularly good when lanolin is used, and moist feel is excellent when cholesterol derivatives are used. It can also be seen that blending a predetermined amount of lanolin and cholesterol derivative in combination (Prescription Examples 26 to 31) results in good fingering and a moist finish.

  Moreover, it turns out from the result of Tables 2-6 that long-term storage stability is also favorable except the formulation example 25 using the sodium lauryl sulfate whose carbon number of anionic surfactant is 12.

(Example 3)
(Irritation evaluation method)
The first agent (prescription examples 6 and 32-36: formulation examples 35 and 36 are decolorizing agents) whose component composition is shown in Table 7 below, and the second agent shown in Table 1 is 1: 1 (mass ratio). The mixture was applied to the inside of the forearms of 28 panelists (1 square centimeter, approx. 0.2 g) and left for 15 minutes to check for irritation (such as tingling tingling) We investigated the strength of And the evaluation of “the prescription example 6 is stronger in stimulation”, “same degree”, and “the prescription examples 32-34 are stronger in stimulation” were evaluated, and the feeling of irritation was compared by the ratio of the evaluation. . In addition, as a decoloring agent, evaluations of “Prescription example 35 is more irritating”, “same degree”, and “Prescription example 36 is more irritating” were made, and the feeling of irritation was compared by the ratio of the evaluation.

  This method shows that the smaller the ratio evaluated as “strong stimulation” is, the lower the irritation, and it is confirmed that there is a correlation with the scalp stimulation. The results are also shown in Table 7 below.

  As is apparent from this result, it is understood that skin irritation (scalp irritation) is reduced by containing a predetermined amount of phytic acid (Prescription Examples 32-34 and 36 (decoloring agent)).

Claims (5)

  In the first agent for two-component oxidative hair coloring / decoloring agent, which contains at least an alkali agent and is used for oxidative hair coloring or decoloring hair, (A) a polyoxyethylene alkyl ether having 16 or more carbon atoms in the alkyl group, (B) A linear saturated higher alcohol having 16 or more carbon atoms, (C) glyceryl stearate, and (D) an anionic surfactant having a linear alkyl group having 16 or more carbon atoms. First agent for oxidative hair dyes and depigmenting agents.   The component (A) contains ethylene oxide having a mol number of 30 to 40 mol and 100 to 200 mol, respectively, and the blending ratio is 1: 1 to 20: 1 (mass ratio). First agent for two-component oxidative hair dye / bleaching agent.   The first agent for a two-component oxidative hair dye / bleaching agent according to claim 1 or 2, wherein the alkaline agent is at least one of ammonia and ammonium hydrogen carbonate.   Furthermore, the 1st agent for 2 agent type | formula oxidative hair dye and a decoloring agent in any one of Claims 1-3 which each contain (E) lanolin and (F) cholesterol derivative.   Furthermore, the 1st agent for 2 agent type | formula oxidative hair dye and a decoloring agent in any one of Claims 1-4 containing (G) phytic acid or its salt.